Maxim Integrated DS2484Q+U I²C to 1-Wire Bridge Device

The DS2484Q+U from Maxim Integrated is a sophisticated and versatile interface chip designed to bridge I²C serial communication to Maxim Integrated's proprietary 1-Wire® protocol. This compact device is an essential component for systems that require communication with 1-Wire devices such as digital thermometers, memory chips, and other unique serially-addressable sensors and devices that operate on the 1-Wire bus.

The DS2484Q+U makes it simpler for microcontrollers with an I²C interface to communicate with multiple 1-Wire devices, even over long cables. Its strong 1-Wire master IO with selectable active pull-up provides the necessary support for 1-Wire power delivery, ensuring reliable data transfer and device operation. This is particularly useful in complex or noise-sensitive environments where signal integrity is paramount.

Key features of the DS2484Q+U include:

• Integrated I²C to 1-Wire bridge functionality, enabling seamless integration with a wide range of microcontrollers.
• Support for standard and overdrive 1-Wire communication speeds, offering flexibility for different application requirements.
• Programmable 1-Wire timing to allow for fine-tuning of the 1-Wire bus characteristics.
• Strong pull-up to V_DD through a programmable current source, facilitating 1-Wire parasitic power mode for devices that require higher current.
• Single-contact 1-Wire port for reduced complexity in wiring and connectivity.
• Built-in 1-Wire line driver for enhanced signal integrity, especially beneficial in extended 1-Wire networks.

With its small footprint, the DS2484Q+U is available in a compact, surface-mountable SOT-23-6 package, making it suitable for space-constrained applications. Its wide operating temperature range of -40°C to +85°C ensures reliable performance in a variety of environmental conditions.

The DS2484Q+U is an ideal choice for designers looking to add 1-Wire connectivity to their systems with minimal additional components and complexity. It simplifies the design and development process, allowing for faster time-to-market for products requiring robust and efficient 1-Wire communication capabilities.